Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

EVALUATION IN A MOUSE PROSTATE CANCER XENOGRAFT MODEL OF THE EFFECTIVENESS OF CYCLOPHOSPHAMIDE METRONOMIC REGIMEN

ABSTRACT: The aim of this study was to evaluate in a mouse prostate cancer xenograft model the effectiveness of cyclophosphamide metronomic regimen, as single agent or in combination with standard docetaxel therapy. We used a human prostate cancer cell line to establish tumours in mice and we treated the animals with the combination of 50 mg/kg of cyclophosphamide (per os) and 30 or 10 mg/kg of docetaxel (intraperitoneally) or with the two drugs alone. We found that metronomic cyclophosphamide alone is as efficient as docetaxel in blocking tumor growth (respectively 18% and 21% of the tumor volume reached by control group in 25 days of treatment). Immunohistochemical analysis on tumours and in vitro proliferation and FACS analyses revealed that cyclophosphamide acts downregulating cell proliferation, both in vitro and in vivo. Through microarray analysis we found the upregulation of p21 that probably together with an action on the micro-environment may explain the induction of apoptosis seen in tumor xenografts. Moreover, we found 107 genes differentially expressed upon treatment with the active metabolite of cyclophosphamide and associated with functions such as cellular movement, growth, and proliferation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE27930 | GEO | 2012/12/30

SECONDARY ACCESSION(S): PRJNA137851

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

EVALUATION IN A MOUSE PROSTATE CANCER XENOGRAFT MODEL OF THE EFFECTIVENESS OF CYCLOPHOSPHAMIDE METRONOMIC REGIMEN

Project description:The aim of this study was to evaluate in a mouse prostate cancer xenograft model the effectiveness of cyclophosphamide metronomic regimen, as single agent or in combination with standard docetaxel therapy. We used a human prostate cancer cell line to establish tumours in mice and we treated the animals with the combination of 50 mg/kg of cyclophosphamide (per os) and 30 or 10 mg/kg of docetaxel (intraperitoneally) or with the two drugs alone. We found that metronomic cyclophosphamide alone is as efficient as docetaxel in blocking tumor growth (respectively 18% and 21% of the tumor volume reached by control group in 25 days of treatment). Immunohistochemical analysis on tumours and in vitro proliferation and FACS analyses revealed that cyclophosphamide acts downregulating cell proliferation, both in vitro and in vivo. Through microarray analysis we found the upregulation of p21 that probably together with an action on the micro-environment may explain the induction of apoptosis seen in tumor xenografts. Moreover, we found 107 genes differentially expressed upon treatment with the active metabolite of cyclophosphamide and associated with functions such as cellular movement, growth, and proliferation. Cells (2 x 10^6) were seeded in T150 flasks and then treated with vehicle (ctrl), with inactive cyclophosphamide (trt) or with 5.5 M-NM-<M of active 4-Hydro peroxy cyclophosphamide (trtA) for 10, 24, and 48 hours.

2012-12-30 | E-GEOD-27930 | biostudies-arrayexpress

Microarray analysis of human gene expression in metronomic cyclophosphamide-treated human glioma U251 xenografts implanted in scid mice

Project description:Cyclophosphamide (CPA) treatment on a six-day repeating metronomic schedule induces a dramatic, innate immune cell-dependent regression of implanted gliomas. However, little is known about the underlying mechanisms of innate immune cell mobilization and recruitment, or about the role of DNA damage and cell stress response pathways in eliciting the anti-tumor immune responses linked to tumor regression. To address these questions, we compared untreated and 6-day metronomic cyclophosphamide-treated human U251 glioblastoma xenografts by human microarray analysis to identify responsive tumor cell-specific factors. Human glioma U251 tumors were implanted sc in scid immunodeficient mice then treated with cyclophosphamide at 140 mg/kg every 6 days. Tumors were collected 6 days after the second cyclophosphamide treatment and also 6 days after the third cyclophosphamide treatment. Tumor RNA was then analyzed on two color Agilent human expression microarrays comparing cyclophosphamide-treated RNA to untreated control tumor RNA.

2015-05-04 | E-GEOD-60867 | biostudies-arrayexpress

Microarray analysis of mouse gene expression in metronomic cyclophosphamide-treated rat glioma 9L xenografts implanted in scid mice

Project description:Cyclophosphamide (CPA) treatment on a six-day repeating metronomic schedule induces a dramatic, innate immune cell-dependent regression of implanted gliomas. However, little is known about the underlying mechanisms of innate immune cell mobilization and recruitment, or about the role of DNA damage and cell stress response pathways in eliciting the anti-tumor immune responses linked to tumor regression. To address these questions, we compared untreated and 6-day metronomic cyclophosphamide-treated rat 9L gliosarcoma xenografts by mouse microarray analysis to identify responsive mouse (host) cell-specific factors. Rat glioma 9L tumors were implanted sc in scid immunodeficient mice then treated with cyclophosphamide at 140 mg/kg every 6 days. Tumors were collected 6 days after the fourth cyclophosphamide treatment. Tumor RNA was then analyzed on two color Agilent mouse expression microarrays comparing cyclophosphamide-treated RNA to untreated control tumor RNA.

2015-05-04 | E-GEOD-60864 | biostudies-arrayexpress

Microarray analysis of mouse gene expression in metronomic cyclophosphamide-treated human glioma U251 xenografts implanted in scid mice

Project description:Cyclophosphamide (CPA) treatment on a six-day repeating metronomic schedule induces a dramatic, innate immune cell-dependent regression of implanted gliomas. However, little is known about the underlying mechanisms of innate immune cell mobilization and recruitment, or about the role of DNA damage and cell stress response pathways in eliciting the anti-tumor immune responses linked to tumor regression. To address these questions, we compared untreated and 6-day metronomic cyclophosphamide-treated human U251 glioblastoma xenografts by mouse microarray analysis to identify responsive mouse (host) cell-specific factors. Human glioma U251 tumors were implanted sc in scid immunodeficient mice then treated with cyclophosphamide at 140 mg/kg every 6 days. Tumors were collected 6 days after the second cyclophosphamide treatment and also 6 days after the third cyclophosphamide treatment. Tumor RNA was then analyzed on two color Agilent mouse expression microarrays comparing cyclophosphamide-treated RNA to untreated control tumor RNA.

2015-05-04 | E-GEOD-60866 | biostudies-arrayexpress

Predicting drug response in human prostate cancer from preclinical analysis of in vivo mouse models (I)

2015-09-17 | GSE69211 | GEO

Predicting drug response in human prostate cancer from preclinical analysis of in vivo mouse models (I)

Project description:Analysis of the transcriptome of mouse models of prostate cancer after treatment with rapamycin and PD0325901 combination therapy or standard of care docetaxel. The Nkx3.1CreERT2/+; Ptenflox/flox; KrasLSL-G12D/+ (NPK mice) was used in this study. Two months after tumor induction, mice were randomly assigned to vehicle (Veh) or treatments groups, such as rapamycin and PD0325901 (RAPPD) or docetaxel (Docetaxel). For the treatment groups mice were administered rapamycin (10 mg/kg) and PD0325901 (10 mg/kg) or docetaxel (10 mg/kg) for 5 days (SHORT) or for 1 month (LONG). At the end of the treatment, mice were euthanized, tumors harvested and snap frozen for subsequent molecular analysis. Total RNA obtained from prostate tumors/tissues. Prostate tumors/tissues were harvested and processed for RNA isolation and transcriptome analysis using the MagMAX RNA isolation kit (Ambion). Total RNA was amplified and labelled for subsequent microarrays hybridization using the Illumina TotalPrep RNA Amplification Kit.

2015-09-17 | E-GEOD-69211 | biostudies-arrayexpress

4T1 mouse mammary tumor RNA-seq gene expression profiling: impact of time course of metronomic cyclophosphamide treatment of triple negative breast cancer tumors implanted in female BALB/c mice

Project description:RNA-seq analysis of polyA-selected RNA isolated from frozen tumor tissue excised from adult female BALB/c mice implanted with 4T1 tumors in the mammary fat pad. Mice were treated with cyclophosphamide given on a metronomic schedule (treatment every 6 days at 130 mg/kg, or PBS (vehicle control), for a total of 2, 4 or 7 treatment cycles) (lab experiment # TD227). These tumor RNA samples were part of a study where we investigated the role of type-I interferon signaling in mouse models of breast cancer [Vergato et al, Canc Res Communic].

2022-03-17 | GSE190531 | GEO

E0771 mouse mammary tumor RNA-seq gene expression profiling: impact of time course of metronomic cyclophosphamide treatment of triple negative breast cancer tumors implanted in female C57/BL6N mice

Project description:RNA-seq analysis of polyA-selected RNA isolated from frozen tumor tissue excised from adult female C57/BL6N mice implanted with E0771 tumors in the mammary fat pad. Mice were treated with cyclophosphamide given on a metronomic schedule (treatment at 130 mg/kg per injection, or PBS (vehicle control)) (lab experiment # TD229). Tumor tissue was collected and used for RNAseq analysis at the following time points: day 1, day 2, day 3, day 6, and day 12, with cyclophosphamide treatments given on day 0, and then again on day 6 in the case of the day 12 time point. These tumor RNA samples were part of a study where we investigated the role of type-I interferon signaling in mouse models of breast cancer [Vergato et al, Canc Res Communic].

2022-03-17 | GSE190532 | GEO

Microarray analysis of human gene expression in metronomic cyclophosphamide-treated human glioma U251 xenografts implanted in scid mice

2015-05-04 | GSE60867 | GEO

Microarray analysis of mouse gene expression in metronomic cyclophosphamide-treated rat glioma 9L xenografts implanted in scid mice

2015-05-04 | GSE60864 | GEO